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Finding the Fourth Proportional to 248.93, 343.08 and 215.66

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Solution

The fourth proportional to 248.93, 343.08 and 215.66 is: 297.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.93 : 343.08 = 215.66 : x
  2. Step 2: Convert to fraction form
    248.93/343.08 = 215.66/x
  3. Step 3: Cross multiply
    248.93x = 343.08 × 215.66
  4. Step 4: Simplify right side
    248.93x = 73,989.49
  5. Step 5: Solve for x
    x = 73,989.49/248.93
  6. Step 6: Final answer
    x = 297.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.